Originally posted by Vlad Is Pentax's Metering System the most stupid on SLR Camera's?
Because i see that it only has 16 segment metering while Canon has 40 or Nikon has hundreds of segments...
is that the main reason for under or over exposure caused by Pentax Cameras?
or burned out details around the subject?
I think it is a design problem plus some QC issues.
If you mount Pentax film lenses (on Pentax DSLRs), say, the FA ones, especially for those made in Japan, the exposure would be more accurate and underexposure will not be so common.
My MZ-30 aand MZ-S with slide films in them exposes far more accurately and brighter than any Pentax DSLRs I've used. Noted that the exposure latitude of slides are indeed even narrower than that of digital DSLRs, and highlights are even easier to burn.
Many latest Pentax digital lenses tend to give dark pictures and underexpose, it has been once verified for the DA 17-70 samples posted by Ned Burnnell:-
NED BUNNELL: DA 17-70 Sample Photos
He applied +0.5 to +1 EV for *most* of the shots he took with his K20D.
Of course, you are right that if you let the camera decides, this 16-segment system is actually not something having a high enough IQ, or, use your word, stupid, also IMHO. I could say Nikon and Canon's multi-segment meters are far more intelligent and both can cater and handle for more different (difficult or not) with better results and a higher hit rate.
To know more about how light metering works and the engineering mathematics beneath, see my homepage:-
RiceHigh's (Pentax) DSLR and Lens Measurbation Page on Exposure Accuracy and More..
My final comment is that it must be true that we should learn how to use our tools, but I'm afraid that the arguments of learning how to compensate the errors of a tool is actually something not very practical, especially when the errors come up rather randomly, unpredictable and are actually dependent on many factors, e.g. lens mounted and the weather conditions (try to shoot in an overcast day, I believe we shall get more underexposure shots - which I have never seen with my Canon) etc. and etc.
If we have to trace, adapt and compensate to those errors we have no clue, what's the base of such compensations and what should we learn actually?? (as there is no standards and logics to follow)
Engineering is a science, and is surely not by luck and chance. If an equipment or a tool (here we call) is not accurate and reliable enough, then the engineers who made the stuff should re-think how they should and could improve the design and/or the manufacturing process.